The issue with general data markets is that they are too .. generic. They can't address the quality assurance problem, so as a buyer you'd end up doing you own

The issue with general data markets is that they are too .. generic. They can't address the quality assurance problem, so as a buyer you'd end up doing you own due diligence for every merchant on the marketplace. As if you were to site-visit each Airbnb before you book a night there. A web-scraping dedicated marketplace might address this, surely not a generic one.